Possibly the Bayley and Ferguson edition (v.152 of the series Music Pamphlets) of the score - has the right number of pages, I think. That edition is edited by a Jacob Schmidt. However, again, this edition does not have publisher information (neither does the British Library catalog, and the SSA site does suggest they get many of their scans from the British Library. That may be the source of this scan.)

Transposed to C major, simplified and condensed/re-written considerably. (It is clear from the table of contents that the Maylath arrangement of Op.24 is also in this series- perhaps the SSA scan did not include the title page from which this could have been assessed.)